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#69129 - 08/29/06 04:09 AM feeder protection
carranoelectric Offline
Junior Member

Registered: 08/28/06
Posts: 4
Loc: stratford ct
Is the secondary feeder from a 75 kva xfrm protected from the primary breaker? I have a 100 amp 480 v breaker on the primary with a 200 amp 208 v secodary to a panel. Do I need a 200 amp main or can I use main lug and have the 100 amp breaker protect the 200 amp feeder?

[This message has been edited by carranoelectric (edited 08-29-2006).]

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#69130 - 08/29/06 04:27 AM Re: feeder protection
Ron Offline

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
NEC 2002 240.21(C)(1) says you need a breaker on the secondary within a limited distance.


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